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Originally Posted by stephencp  How is it that Think and Grow Rich is in the public domain given that it's copyright is 1937 (and that 1923 if often the milestone public domain stuff). |
That's a good question. You're right that anything published before 1923 is in the public domain. For everything else it gets tricky based on
what I've found. According to this, the book would be in the public domain right now if: it was originally published without a copyright notice, or it was published with a copyright notice but copyright was not renewed. If copyright was renewed then it would be copyrighted for 95 years from date of publication (for Think and Grow Rich that would be 2032). From looking around a bit, my understanding is that the copyright for the first edition (from 1937) either wasn't renewed or it was placed into public domain by the copyright holders.